| article html file updated | 9 February 2020 13:09 CET | Update | https://www.mdpi.com/1996-1073/11/4/877 |
| article html file updated | 2 October 2019 10:45 CEST | Update | - |
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| article html file updated | 10 April 2018 07:25 CEST | Original file | - |
| article xml uploaded. | 10 April 2018 07:23 CEST | Original file | https://www.mdpi.com/1996-1073/11/4/877/xml |
| article pdf uploaded. | 10 April 2018 07:23 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/877/pdf |
